Install Manual Part 3
Table Of Contents
- CHAPTER 4- MAINTENANCE
- APPENDIX A - SIGNAL & CABLE CHARACTERISTICS
- APPENDIX B - CHECKOUT USING TCAS-201 RAMP TEST SET
- APPENDIX C - CHECKOUT USING T-49C FLIGHTLINE TESTER
- APPENDIX D - USING THE TERMINAL DEVICE
- APPENDIX E - CHECKOUT USING ALTERNATE DISPLAY
SKY497
Installation Manual
4-4
Rev. C
The calibration value (000-359) is derived from a variety of measurements. Specific values are meaningless
however, in a failed TRC, a varying spread may indicate problems with the directional antenna system
(antenna, cables, or connectors) or the TRC.
If the calibration failed, the message “Re-calibration Failed!” will be display (see figure 4-4).
Figure 4-4. Failed Calibration
Press YES to calibrate; press NO to return to the Service Menu. Soft-keys (3) and (4) are not used.
4.4.2 System Log
The 20 most recent errors detected by the system self-test are saved in the System Log. For each error, the
corresponding error code and run-time of occurrence are saved. The system log, as shown in figure 4-5, is
displayed by selecting that option from the Service Menu (i.e., press SELECT with System Log high-
lighted). System Log can be accessed with a terminal device by using the Dump command.
NOTE
Tables 4-2 and 4-3 provide a list and description of each error code (see paragraph 4.6).
Figure 4-5. System Log